For the hydraulic simulation can be started, the hydraulic scenario must meet the rules of consistency.

Consistency tests can be run in several ways:

• Automatically when saving the XML file or when validating the windows of description of offtakes or description of cross-structures
• Manually by the button "Network Consistency"

The consistency of the hydraulic scenario window lists the fatal errors and warnings found in the script and allows whenever possible to directly edit the element concerned by double clicking on the line of the error.

Among the tests performed, the software checks that initial flows are positive in all reaches of the network. This condition is necessary to perform a calculation in steady flow, but can be ignored for unsteady flow calculation.